Water → 1-(cyclopropylmethyl)-3-(6-O-ethoxycarbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole

HRID 7397

Reaction equation

HRID 7397 reaction equation
[CH:1]1([CH2:4][N:5]2[C:9]([CH3:10])=[C:8]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([O:18][CH:19]([CH3:21])[CH3:20])=[CH:14][CH:13]=3)[C:7]([O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][OH:33])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[N:6]2)[CH2:3][CH2:2]1.Cl[C:35]([O:37][CH2:38][CH3:39])=[O:36].O.C(O)(=O)CC(CC(O)=O)(C(O)=O)O.O>CC1C=C(C)C=C(C)N=1>[CH:1]1([CH2:4][N:5]2[C:9]([CH3:10])=[C:8]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([O:18][CH:19]([CH3:21])[CH3:20])=[CH:14][CH:13]=3)[C:7]([O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][O:33][C:35]([O:37][CH2:38][CH3:39])=[O:36])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[N:6]2)[CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 962WaterHCID 10928Ethyl chloroformateHCID 222302-Hydroxy-1,2,3-propanetricarboxylic acid hydrate (1:1)HCID 691338471-(cyclopropylmethyl)-3-(beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole

Product 1

HCID 235455131-(cyclopropylmethyl)-3-(6-O-ethoxycarbonyl-beta-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazoleYield 74.4%

Reagents, catalysts & solvents 1

HCID 79532,4,6-TrimethylpyridineSolvent

Procedure

To a solution of 1-(cyclopropylmethyl)-3-(β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole (0.050 g) in 2,4,6-trimethylpyridine (1 mL) was added ethyl chloroformate (0.035 g), and the mixture was stirred at room temperature overnight. Citric acid monohydrate (3.3 g) and water were added to the reaction mixture, and the mixture was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol), and successively by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1) to give 1-(cyclopropylmethyl)-3-(6-O-ethoxycarbonyl-β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl ]-5-methyl-1H-pyrazole (0.043 g).

Workup

  1. distillationthe mixture was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol)

Sources & evidence

ORD record
ord-a263acd080c74398b09f94a2fc949eda
Source dataset
uspto-grants-2006_08
Patent number
US07087579B2

Linked notes

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